Strange thing happening in a session (PE 8.5)

I re-visited a session that I haven't opened in a few months. I found 2 strange occurrences. First, when I unfreeze any track it shifts my audio to the left. A good ways to the left, like 10 seconds to the left. When I undo the unfreeze it goes back to normal. So, I'm thinking this is strange, but no huge deal. I just chalk it up as a weird bug, and manually line my audio tracks back up.

Then (separate issue, same session) I had a reverb as a send/ return to a vocal track. I removed the reverb plugin and replaced it with another. But it's not sending any effect. No matter how much mix a dial in it will not send any effect to the track. That was late last night. I have not tried to create a new send. I have only tried the send that was already created in this particular session.

Has anyone ever heard of either of these? And (perhaps more important) did everything I just wrote actually make sense? If not let me know and I'll try to explain it better.

Thanks!

Version 8.5 (Producer). I wrote that in the title, but not the actual post. My apologies.

I've had similar issues with sends once or twice (on 5PE). Would have thought they had things like that fixed 3.5 versions down the road...sigh.

Yes, reverb is on a bus. And even when I increase mix to 100% - still no effect. And that means 100% on the track send and 100% wet mix within the plugin, as well. Also - the problem is not just reverb. I've open various plugins (just to test it) and still nothing.

Thanks!

I unfreeze any track it shifts my audio to the left. A good ways to the left, like 10 seconds to the left. When I undo the unfreeze it goes back to normal.

Just to be sure, did you move these clips after yopu froze them or change the project tempo?
As you may know, any edits done to a frozen clip will be undone when its frozen.
Cj